Method and apparatus for making submicrom powders

Details Method and apparatus for making submicrom powders Method and apparatus for making submicrom powders

1987-11-12

1988-08-09

Leung, Philip H.

Electric heating

Metal heating

Cutting or disintegrating

21912116, 264 10, 427 30, B23K 1500, B05D 106

Patent

active

047629754

ABSTRACT:
A process for producing ultrafine particles includes the steps of providing a consumable electrode having a rod or wire configuration, melting the tip of the electrode by means of electron bombardment, and applying an intense electric field to the molten tip to generate a beam of charged droplets. By heating the tip of the rod but avoiding melting of the tip and subsequently applying an electric field to the heated tip, an ion beam may be generated.

REFERENCES:
patent: 2131204 (1938-09-01), Waldschmidt
patent: 2793282 (1957-05-01), Steigerwald
patent: 2942098 (1960-06-01), Smith, Jr.
patent: 3041672 (1962-07-01), Lyle
patent: 3219453 (1965-11-01), Gruber et al.
patent: 3275787 (1966-09-01), Newberry
patent: 3328672 (1967-06-01), Park
patent: 3432335 (1969-03-01), Schiller et al.
patent: 3607222 (1971-09-01), Kennedy
patent: 3634647 (1972-01-01), Dale
patent: 3795783 (1974-03-01), Plumat et al.
patent: 3864572 (1975-02-01), van der Mast et al.
patent: 4036568 (1977-07-01), Morlet et al.
patent: 4190404 (1980-02-01), Drs et al.
patent: 4207040 (1980-06-01), Metcalfe et al.
patent: 4218410 (1980-08-01), Stephan et al.
patent: 4264641 (1981-04-01), Mahoney et al.
patent: 4318029 (1982-03-01), Jergenson
patent: 4374075 (1983-02-01), Yolton et al.
patent: 4377603 (1983-03-01), Itoh et al.
patent: 4431137 (1984-02-01), Prewett et al.
patent: 4474604 (1984-10-01), Nakamura et al.
patent: 4488045 (1984-12-01), Anazawa et al.
INSPEC, Patent Associated Literature, JO45-7513-G, "The Tungsten Filament Gun in the Scanning Electron Microscope", by Oatley, 12/1975.

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